I have tried to install the latest nvidia driver (185.85) with no success. To make a long story short: I need to get Vista64 ultimate to stop installing the driver on its own after I reboot. I have tried all the various ways of uninstalling the old driver, but Vista keeps trying to reinstall it after I reboot. When it boots to the desktop it shows a window that says it is installing the graphics driver, but it does not install Nvidia Control Panel, it asks click here to finish installing the driver. No matter what I do it insists on installing the old driver. I tried to go ahead and install 185.85 but I get a "version mismatch" when I try to open Nvidia Control panel. Any ideas? Thanks.